A Car Travels Along a Certain Road at an Average $60 \mathrm {~m} / \mathrm { s }$

question 7

Multiple Choice

A car travels along a certain road at an average speed of $60 \mathrm {~m} / \mathrm { s }$ and returns along the same road at an average speed of $20 \mathrm {~m} / \mathrm { s }$ Calculate the average speed for the round trip.

• A) 20mph
• B) 30mph
• C) 40mph
• D) 50mph
• E) 60mph

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